TY JOUR TI Acceleration of particles in a constant magnetic field and an electric field perpendicular to it, increasing with time KW particle acceleration KW crossed electric and magnetic fields KW constant magnetic field KW time-varying electric field KW space plasma JO Solnechno-Zemnaya Fizika AU Kichigin, G.N. PY 2021 IS 7 PB Institute of Solar-Terrestrial Physics SB RAS